For Public Elementary and Secondary Schools: DO Memo No.10, s.17 2017 ANNUAL PHYSICAL CHECKING OF NATIONAL TEXTBOOKS AND LEARNER’S MATERIAL Posted on March 22, 2017 by DepEd Mandaluyong Leave a comment 17-03-091. DO Memo No.10, s.17 2017 ANNUAL PHYSICAL CHECKING OF NATIONAL TEXTBOOKS AND LEARNER’S MATERIAL Memorandum